Document Archives

Foamed Concrete: Another Option

• ID:

  1872

• ESCSI:

  4940.064

• Author:

  Anonymous

• Publication Name:

  Civil Engineering (London)

• Type of Publication:

  Journal

• Publisher:

• Dated:

  1986

• Issue/Volume:

  October

• Other ID:

• Page(s):

  29-30

• Reference List:

  Y

• Abstract:

  The usefulness of concrete lies in its predictable compressive strength of up to 60N/mm/SUP/2 or so, a density of about 2200kg/m/SUP/3 and a coefficient of expansion similar to steel. Then we contend of course with those aspects which detract, such as brittleness, alkali aggregate reaction, become previous after several thermal cycles with consequential effects, uneven discoloration, finite life in locations with heavy pollution, and exposed attrition. Design therefore takes these parameters into account in order to get the best out of concrete. Foamed concrete merely adds to concrete’s useful repertoire. “Gas concrete” relies upon the admixture of aluminum powder to the cement and fine aggregate to produce hydrogen. This chemical effect causes the mix to expand forming gasways.